Litecoin just started to increase together with other altcoin, so I think it is better to hold until it reach more than the LTC ATH last 2017. Ethereum keep on increasing, so it is no wonder that other altcoins also climbing up.
All of this is because Bitcoin has increased by up to 20% from the previous price, so other tokens such as Ethereum, ADA, LTC, Doge, TRX and others have also experienced a very good increase, another one is TEN where the increase has exceeded 80% of the price previous.